The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2007
Filed:
Apr. 19, 2002
Michael Paul Wagner, Raleigh, NC (US);
Paul Thomas Mcgrath, Raleigh, NC (US);
J. Brandon Myers, Durham, NC (US);
Bruce Allen Keesee, Durham, NC (US);
Michael Paul Wagner, Raleigh, NC (US);
Paul Thomas McGrath, Raleigh, NC (US);
J. Brandon Myers, Durham, NC (US);
Bruce Allen Keesee, Durham, NC (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A method allows point-in-time viewing of session data for multiple sessions being stored on a disk. Session bits are set for the session data in memory which points to the data at any particular point in time, and this can be done for multiple sessions. In order to make the session data persistent, separate session bits are stored in a portion of a disk reserved for such session bits. Thus, in the event of failure where session bits which are stored in volatile memory such as RAM, are lost, the duplicate copy set in the non-volatile memory can be used to recreate the session once the failure is corrected.